Liquid-supply apparatus



LIQUID SUPPLY APPARATUS Filed July 25, 1925 21 i 25 I 53 E 5 2 4/ i 33 JCREE/V 2 .52 i 3/ 6 Patented Mar. 4,1930

UNITED STATES PATENT OFFICE WILLIAM A. CHRYS'I AND HERBERT C. WALTERS, OF DAYTON, OHIO, ASSIGNORS, IBY

HEBNE ASSIGNMENTS, TO DELCO-REMY CORPORATION, OF DAYTON, OHIO, A COR- PORATION OF DELAWARE LIQUID-SUPPLY A?PARATUS Application fled July 25, 1925. Serial No. 46,026.

This invention relates to liquid supply de vices especially for supplying fuel to the carburetor of aninternal-combustion engine.

One of the objects of the invention is to provide a simple and compact liquid supply electromagnet winding.

Further objects and advantages of the present invention will be apparent from the following description, reference being had to the accompanying drawings, wherein a preferred form of. the present invention is clearly shown.

In the drawings:

Fig. 1 is a plan view of apparatus involving our invention; and

Fig. 2 isa sectional view on the line 22 of Fig. 1.

Referring to the drawings, 20 designates an internal-combustion engine having a carburetor 21 which may be of any type, having a fuel vessel or bowl 22. The type of carburetor chosen for purpose of illustrating the invention, is described and claimed in the copending application of Fred E. Aseltine, Serial No. 4,665, filed January 26, 1925. The fuel vessel 22 is provided by a frame 23 of magnetizable material, having a part 24 provided with a central. or through. passage com prisingcounterbored portions of varying diameters, the largest of which is adapted to enclose a magnet winding 25 and to provide a part of the magnetic circuit energized by the winding, the next smaller portion having the cylinder 29 fitting therein and the smallest portion of the through passage having the shank portion of the plug or coupling 30 extending therethrough. The lower end of the said part 24 is closed by a magnetizable plate 26, which is attached to the frame 23 by screws 27. The plate 26 supports a tubular magnetizable core 28, which extends within the non-magnetic cylinder 29, having its upper end threaded to receive the plug or coupling 30. The core 28 is threaded to receive a tube 31, having a groove 32 surrounded by a strainer screen 33 and having side passages 34 connecting the groove 32 with a center passage 35. A liquid sump member 36 is attached by a bolt 37 to the tube 31, and its upper edge 38 is located between the edge of a plate 26 and a flange 39 provided by the tubing member 24. A gasket 40 is located between the edge 38 of the member 36,'the plate 26 and the tubular member 24. Member 24 is provided with a threaded opening 41 for receiving a liquid intake pipe, and passage 41 is connected with the interior of the sump 36, by passage 42 in the member 24, a hole 43 in the gasket 40, and a hole 44 in the plate The tube 31 provides a seat 50 for a valve 51 retained by a valve cage 52. The core 28 supports a non-magnetic member 53 which provides a stop engaged by the lower end of a magnetizable piston 54. The member 53 also receives the lower end of a spring 55 which urges the piston 54 upwardly against the lower end of the coupling 30. The member 53 also telescopically engages the piston 54 in order to provide a dashpot cushioning the downward movement of the piston. Piston 54 provides a valve seat 56 receiving a valve 57 retained by a cage 58. The cage 58 supports the lower end of a coil spring 59 having its upper end attached to the shank 60 of a contact 61. Contact 61 engages a contact 62 supported by a screw 63, which is adjustable through a bushing 64 supported by a nonconducting plate 65, which closes the upper end of the coupling 30. The screw 63 is attached by nut 66 to a conductor 67 connected by screw 68 with a terminal clip 69 which is attached to wire 70 leading from one end of the magnet coil 25. The other end of the magnet coil is connected with a terminal clip 71 having a screw 72 for attaching to the clip a wire connected with a source of current.

The central passage 73 in the coupling 30 is connected by side holes 74-with a groove 75. The frame 23' is provided with a horizontal extension 76 having its bottom and top surfaces machined to receive gaskets 7 7 and 78. The extension 76 is provided with an opening for receiving thecoupling 30 and with a passage 79 which registers with the groove 75 of the coupling 30 when said coupling is screwed into the cylinder 29. as shown. The passage 79 is formed by drilling across the opening which receives the coupling 30 and closing a portion of this drilled passage by a plug 80.

- with a passage 87 connected with the passage 79. A gasket 88 having a hole registering with the passages 86 and 87, is located between the cover and the fuel bowl. The passage of fuel from the pump to the fuel bowl is controlled by a valve 89 slidable in a guide provided by the passage 84. The "alve is supported by a lever 90 pivoted upon a rod 91, supported by the cover 81. 'The lever 90 is attached to a float 92. When the level of liquid in the bowl 22 exceeds a certain amount, the float 92 will be lifted to the position shown in Fig. 2, and will move the valve 89 to closed position.

Where the apparatus is used to supply fuel to the engine of an automotive vehicle, the terminal 71 is connected with a sourcev of current, usually the storage battery and generator, by means of a switch coordinated with the ignition switch, which is turned on in order to start the engine. The magnet will be energized and will attract the piston 54 toward the core 28. The downward movement of the piston 54 will cause the contact 61 to be separated from the contact 62, and the circuit to the magnet coil will be inter-, r'upted. Then the spring 55 will move the piston 54 upwardly to close the contacts 61 and 62. In this way,'the piston 54 will be reciproeated in order to pump fuel from the supply tank to the fuel bowl 22. Until the valve 8;) is closed by operation of the float 92, liquid will flow from the pump to the fuel bowl. After the valve 89 closes, the pressure of the liquid between the valve'89 and the valve 57 will increase, and resist the operation of the spring 55, tending to move the piston 54 upwardly to close the switch contacts. In this way, the operation of the pump is modified according to the level of the liquid in the bowl 22.

The present invention, therefore, provides an exceedingly compact structure for delivering fuel from the fuel tank to a carburetor. The compactness of structure has been brought about principally by providin a magnetizable frame which includes the oat 1. A pump comprising, in. combination, a

magnetizable frame providing a magnet housing open at the lower end and having an inlet passage, a vertical tubular duct provided by the frame in vertical alignment with the magnet housing, an outlet duct connected with the vertical duct, a magnetizable plate closing the lower end of the magnet housing. a tubular magnetizable core supported centrally by the plate and located within the housing, a non-magnetizable cyl inder connectedwith the core and extending through the magnet housing, a pump piston within said cylinder, a pump outlet and circuit interrupter housing connecting the pump cylinder with the vertical tubular duct of the frame, amagnet within the magnet housing, and piston operated circuit interrupter mechanism within the circuit interrupter housing and in axial alignment with said pump piston.

2. A pump comprising, in combination, a magnetizable frame providing a magnet housingopen at the lower end having an inlet passage, a horizontal extension from the frame provided with a cylindrical bore in vertical alignment with the magnet housing and with an outlet passage connected with said bore, a non-magnetizable pump cylinder extending through the magnet housing, a tubular member engageable with an upper wall of said extension and insertable within the bore of said extension and threadedly engageable with the upper end of the cylinder which is cngageable with an under wall of said extension whereby said extension is clamped between the tubular member and cylinder, the tubular member providing a closure for the upper end of the vertical bore and provided with side openings communicating with the bore, a magnetizable piston slidable within the cylinder, a magnet coil within the magnet housing and surrounding the cylinder, and a piston operated circuit interrupter located within said tubular member.

3. A pump comprising in combination, a magnetizable frame providing a magnet houslng having an apertured end wall; an integral extension of magnetizable material on said frame, having a passage and spaced from the end wall, and being provided with an opening in alignment with the aperture in said end wall; a pump cylinder extendmg through the magnet housing and its apertured end wall and terminating adjacent sa1d extension; said cylinder communicating w th inlet and outlet openings, a plug extendlng through the opening in the extension and engaging and supporting the cylinder, said plug having passages providing communication between the passage in the extension and the cylinder; a magnetizable piston in the cylinder; a magnet coil in the magnet housing; and a control device for intermittently energizing the magnet coil.

4. A pump comprising in combination, a magnetizable frame having coaxial recesses of varying transverse dimensions and a coning verticall through the magnet housing, means exten ing through the vertical tubular duct to support said cylinder, and a magnet winding within the magnet housing and surrounding the pump cylinder.

In testimony whereof we hereto afix our signatures.

WILLIAM A. CHRYST. HERBERT G. WALTERS;

duit in an integral extension of said frame communicating with the smallest of said re- Y cesses; a pump cylinder extending through the largest recess and fitting into a smaller recess; said cylinder communicating with inlet and outlet passages;a plug having a reduced portion fitting in and extending through the smallest of said recesses, the inner end of the plug engaging the cylinder, said plug having passages providing communication between the cylinder and the conduit mentioned; a magnet coil in the largest recess, surroundin the cylinder; a magnetic piston in said cy inder; and means concentric with the cylinder for controlling the operation of the magnet coil.

5. A pump comprising in combination, a magnetizable frame having a through passage comprising portions of varying diameters and a cross passage communlcatlng with the through passage; a cylinder extending through the largest diameter portion of the through passage and fitting mto an intermediate portion of said through passage; said 7 cylinder communicating with inlet and outlet passages; a plug having a screw threaded shank portion extending through the smallest diameter portion of the through passage and screw-threadedly engaging the cylinder for clamping it against the shoulder formed between the intermediate portion of the through passage and the smallest diameter portion thereof, said plug having a passa e providing communication between the cy. inder and the cross passage in the frame; a magnetizable piston in the cylinder; a magnet coil in the largest diameter portion of the through passage and surrounding the cylinder; and means in axial alignment with the cylinder and piston for controlling the operation of the magnet coil.

6. A liquid circuit relay mechanism comprising, in combination, a magnetizable frame providing a magnet housing open at the lower 

